Conclusion: I bought these along with the 528's as re-placements for my MTC...Because they are 2 OHM they effectively double the power of my head unit which is stock....( and cannot be re-placed )....I have gone to full volume with these without them distorting , which I find amazing.
Conclusion: I dropped four of these into my 2009 328i - couldn't believe how bad the stock speakers were. Amazingly bad. I have always been impressed with JBL speakers and thought at this price, I would give them a try. Best $100 I have spent in a long time.
Conclusion: I own a 2010 BMW E90, great car but the BMW Professional sound system is awful, especially the rear deck 4 inch factory woofers (BMW bean counters took out all the tweeters and the amp on this car in 2010).
Conclusion: I got these because I needed some 2 ohm speakers to replace some broken bose speakers. They are working great. Sound better than the $440 bose replacements the audi dealer wanted me to buy.
Summary: Habe diese Lautsprecher in den Hintertüren des 407 eingebaut. Grunde hierfür waren u.a. das ich einen Subwoofer auf die Hinteren Lautsprecher Leitungen gelegt habe. Sprich die Originalen Boxen mit 4 Ohm waren mies. Die Qualität dieser sowieso. Alles in allem kann man es sich anhören...